Apparatus for forming tying strips and applying the same to bags



3m. 24, 1939. A. POTDEVIN ,7

APPARATUS FOR FORMING'TYING STRIPS AND APPLYING THE SAME TO BMW OriginalFiled May 3, 1937 5 Sheets-Sheet 1 INVENTOR' ATTORN EY Jane 24; igggPOTDEVIN 2,144,72

APPARATUS FOR FORMING TYING STRIPS AND APPLYING THE SAME TO BAGSOriginal Filed May 3, 1957 5 Sheets-Sheet INVENTQR BY MM ATTORNEY A.POTDEVIN 2,144,729

APPARATUS FOR FORMING TYING STRIPS AND APPLYING THE SAME TO BAGSOriginal Filed May 3, 1937 3 Sheets-Sheet 3 INVENTOR E ATTGRNEYSPatented Jan. 24, 1939 arcane STATES Arena" APPARATUS FOR FORMING TYINGSTRIPS AND APPLYING THE SAME TO BAGS Adolph Potdevin, Garden City, N.Y., assignor to Potdevin Machine Company, Brooklyn, N. Y., a corporationof New York 11 Claims. (Cl. 271-4) This invention relates toimprovements in mathe paper tape being folded about the metal chines formaking bags and is particularly directed to an improved device forapplying a metal tie strip to the end of bags of the type knowncommercially as metal tie bags.

This application is a division of my copending application Serial No.140,436, filed May 3, 1937, andis directed more specifically to a deviceof the character indicated having novel feeding means for the blanks inthe making of such bags as above referred to.

In making metal tie bags a small strip of metal extending transverselyof the bag is applied to the open end of the bag and when the bag is tobe closed the strip and bag end are rolled over upon the bag severaltimes and the projecting ends of the tie strip are bent over the bagbody to hold the bag closed.

It is an object of the present invention to prostrip as the two progressthrough the machine.

The supply bags 2 are stacked at the magazine l on a table or bed it.lie transversely of the machine and are fed forward lengthwisesuccessively from the bottom of the stack with the bag bottom in thelead, into position to be picked up by the forwarding mechanism whichforwards the bags laterally toward the discharge end of the machine.

The magazine table or bed is provided with adjustable corners ll, thecorners ill at the bottom end of the bags being provided with lugs forsupporting this end of the bags. of bags disposed on this table the flap29 of the lowermost bag of the stack will sag downwardly through theopening it in the table, as seen in Figs. 2 and 3.

Beneath the magazine table or bed it is a pair With a stack The bags inthe stack vide a machine which is full automatic in its o wa d jaws, dei nated 22 a d The operation and is adapted to form the tie strips l 22affiXed 130 an arm 25, the j and arm and to apply the same to the bag incontinuous being p d 011 a Stud 'The j w is a operation. However, thepresent application is fixed arm 39 0 pivoted 011 the u 23 Which morespecifically directed to the novel means is carried n the fr nd f a lev3 piv te 25 for withdrawing bags from the bottom of a stack intermediates ends on haft 25 of bags and means for moving the bags laterally Thefree end of the arm 25 Carrying the j toward the discharge end of themachine 22 is provided with a cam follower 36, the free In theaccompanying drawingsIhave illustratend of the arm 33 the J' 24 W 3, Camed the machine of the present i v ti follower 38 and the free end oflever 32 with a 30 In the drawings: cam follower 49. The cam follower 3tcooper- 30 Fi 1 i plan i of the machine; ates with a cam :22 and the camfollower 38 co- Fig 2 is View Showing the charging end f operates with acam M. Both of these cams the machine in ekvation; are mounted on theshaft 3d. The cam follower Fig. 3 is a part sectional elevational viewof g i zf a}? On 3 d th 35 thecam mechanism by which the bags to whichvarioiis iis hr i trolli ng t lfe sa $11536 de 0 2252 3 322 be apphedare fed forward scribed in detail hereinafter, but at this point I 4 fth 13 f h would like to say that this mechanism is so art 15 i 0 e,sameP 0 t m ranged that at the proper time the jaws 22 and chine but withthe parts in a different position; 24 will close upon the flap 25 at thebottom end 40 of the lowermost bag in the stack of bags and 5 1S aSectlon on lme of move the bag forward sufficiently to be picked upReferring to the drawings in detail! 2 desigby" the rollers 5i) whichare mounted to rotate hates the bags to Which tie Strips are to be 4about axes extending lengthwise of the machine. 45

plied. The bags are taken from a magazine 4 located at the charging endof the machine and passed through the machine continuously Whiletraveling laterally. During the advance of the bags a metal strip 6enclosed in paper tape 8 and constituting the tie strip is applied tothe projecting flap H3 which is provided for this purpose at the openend of each bag.

The metal tape 6 and the paper tape 8 are taken from supply spools i2and M, respectively,

The arm 32 has four motions. First it moves forward with the jaws 22 and25% open to grip the bag. It then moves away from the feed rollers 58pulling the bottom end of the gripped bag off its support. rying the bagto the feed rollers, the jaws open and the assembly returns to startingposition.

The forwarding rollers 50 forward each bag crosswise of the machinetoward a table or bed 52. This table 52 is provided with a side plateThe arm then moves forward car- 5 56 and an end plate 58 for promotingproper positioning of the bags. These plates are adjustable so as toaccommodate the machine to bags of different lengths as well as to bagsof different widths.

As each bag is being fed forward toward the table or bed 52 plate 6-0which is being reciprocated transversely to the bag motion is returningunder plate 56, and when the plate 68 has moved under 56 the bag dropsto table 52 to be pushed by the downwardly bent flange 6;. on the plate60 to forwarding rollers 66. The rollers 65 deliver the bags betweenupper and low r forwarding chains designated 68 and i6, respectively.

Reverting to the pusher mechanism by which the bags are pushed from thetable 52 it will be seen that webs I2 are secured to the underside ofthe pusher plate 60. These webs are carried by a plate I4 mounted onrails l6 extending lengthwise of the machine. Secured to the plate 5 5is a short link I8 pivoted to the plate at 30, this link being pivotallyattached to a lever carried by shaft 84. The shaft 64 also carries crankarm 86 pivotally connected to connecting rod 66, the free end of whichis attached to crank disc 90. The connection of the connecting rod 88 tothe crank arm 86 is adjustable so that the throw of the arm or lever 82and hence throw of the pusher 60 may be adjusted to accommodate bags ofdifferent widths.

The driving motor for the machine is designated 94. This motor, througha sprocket and chain drive, drives a pinion 95 meshing with a spur gear98 mounted on a stub shaft which carries a gear I00. The gear Iiiilmeshes with gear I02 mounted on shaft 564 carrying pinion I06, thelatter meshing with a pinion IE8 in mesh with a pinion II 0 on shaft II2. The latter extends longitudinally of the machine toward the chargingend thereof where the shaft terminates. This end of the shaft carries agear H3 meshing with wide faced gear I I4, the gear H4 meshing with agear II6 on the shaft 34 carrying the cams 42 and 44. The opposite endof this cam shaft 34 carries a gear H8 meshing with gear I20 in meshwith gear I22 on the shaft carrying the lower roller of the twoforwarding rollers 50, this shaft carrying a gear I23 in mesh with gearI28 on the shaft of the upper rollers of the forwarding rollers 50.

This provides a drive for the forwarding rollers 50 and for the cams 42and 44.

Below the cam shaft 34 is the cam shaft 48 carrying the cam 46 and thisshaft is also driven off the gear II8 through gear Ific. The shaft mcarries bevel gear I32 meshing with bevel gear I34 on the shaft I36carrying the crank 90.

It is to be noted that the grippers and their controlling earns, theforwarding rollers Eli], and the gear trains for driving the cams andforwarding rollers, as well as the crank for driving the pusher 60 canbe adjusted transversely of the machine by hand wheel I3I.

The drive for the forwarding chains and i6 is from a pinion I38 on thestub shaft Hi4, gears I40, I42, I44, bevel gears I46 and I48 whichdrives shaft I50 carrying the sprocket for the lower chain I0. Thisshaft I50 carries gear I 52 meshing with gear I54 on the shaft I56carrying the upper chain 68. This gear train will drive the lower leadof the chain 68 and the upper lead of the chain I0 in the same directiontoward the delivery end of the machine.

The bags are gripped between the upper lead of the lower chain I0 andthe lower lead of the upper chain 68 as more fully shown and describedin my copending application Serial No. 140,436. This provides forgripping the bags so as in effect to attach the bags successively to theforwarding chains for advancement.

As above stated the metal tape 6 forming part of the tie strip is takenfrom the supply reel I2. This reel lies beneath the machine and the tapeis drawn upwardly to the machine bed and then forward toward thedischarge end of the machine by feed rolls I66. The roll I2 is equippedwith suitable retarding mechanism Hi? to prevent overrunning. The metaltape as it is drawn upwardly passes about guide rolls H2, I74, I16, H8,I80, I6i, I62 and roller I84 which is carried on the same shaft lBfi asthe idler sprockets I88 for the lower chain E8.

The paper tape 8 which is taken from the reel Id and which is to enclosethe metal tape 6 before the latter is placed in position on the bags 2is also forwarded by the feed rollers I56.

This tape passes from the reel I4 about guiding and tensioning rollers(not shown), then between roller I92 and gluing roller I93 where threestripes of adhesive are continuously applied to the face of the tape asmore fully shown and described in my copending application Serial No.146436.

The paper next passes about the rollers I80, IBI and IE2, previouslyreferred to. The roller 23?! is so shaped that as the paper tape passesthe same one edge of the tape will be turned inwardly over and upon themetal tape 6 to bring one of the adhesive stripes into engagement withthe face of the metal tape. As the paper tape and metal tape continuetheir forward movement another stripe adhesive i538 applied to theturned-over part of the tape.

The paper tape then passes over the roller I84 and the two tapes fromthence travel lengthwise of the machine beneath the projecting flap I 0of the bags 2, the adhesive stripe I98 contacting the underside of theflap.

As the paper and metal. tapes together with the bags travel lengthwiseof the machine they pass a plate 204 which deflects that portion of thepaper tape carrying the adhesive stripe I94 over upon the upper face ofthe flap 50 of the bags. The tapes and bags then pass beneath a hingedplate 208, to the pair of feed rollers I66 which press the tapes andbags together.

The tie strip is continuous, as will be understood, and after it haspassed the rollers I65 it is cut off between adjacent bags 2 by a cutterbar 2I4. chains 68 and I0 continue the lateral advance of each bag withtie strip attached until the same is picked up by discharge rollers 2I6by which the bags are successively discharged into a receiving troughM8. The discharge rollers 2I6 are geared together and are driven off thegear I54.

The feed roller I 65 and its cooperating roller are driven off the gearI52 through intermediate gear and gears I55.

The shaft which. carries the sprocket for one end of the lowerforwarding chain "IQ is provided with a gear moshing 'th a pinion whichin turn meshes with another pinion on the s-.aft of the lower offorwarding rollers 66, and is suitably geared to the shaft of the upperpair of forwarding rollers as fully shown and descibed in my copendlngapplication Serial No. 140,436.

The drive for the adhesive-applying roller I 93,

After the tie strip has been severed the r chine so constructed andarranged that bags are Which constitutes no part of the invention of thepresent application, is also fully described and illustrated in mycopending application Serial No. 140,436 of which the presentapplication is a division.

For purposes of threading the machine initiali the roller 5 82 whichcooperates with the adhesiveapplying disc lad is mounted on a pivotedarm 2% to which is attached an arm 2-1 2. This arm is provided with anotch 2 3d adapted to engage shaft which mounts the roller 82. Bylifting up the roller 592 and engaging the notch 22% v tl the shaft 2%the roller #92 cooperative relation with th disc 93.

It will be seen from all of the foregoing that the present inventionprovides an automatic m w continuously taken from a supply stack and forwarded laterally through the machine. At the same time paper tape andmetal tape are co ime ously fed lengthwise through the machine insuperimposed relation to each other, adhesive be on the open end of thebag with the ends of the tying strip projecting a short distance beyondthe sides of the bag.

It is to be understood that the details of construction and arrangementof parts herein shown and described may be varied Without departing fromthe spirit and scope of my invention.

What I claim is:-

l. A machine of the class described comprising in combination, means forsuccessively withdrawlaterally, forwarding rollers receiving the bagsfrom said pusher, and a pair of superimposed chains receiving the bagsfrom said rollers to be gripped therebetween thereby to continue thelateral movement of the bags toward the discharge end of the machine.

2. A machine of the class described comprising in combination,cam-controlled grippers for automatically gripping the bottomed end ofthe lower bag of a stack of bags, a pair of forwarding rollers, a camfor pivoting said grippers to effect delivery of the gripped bag to saidroliers, a reciprocating pusher for engaging each bag as it is releasedby the said forwarding rollers, a second pair of forwarding rollers forreceiving each bag from the pusher, forwarding chains for continuing theadvance of the bags to the discharge end of the machine.

3. A machine of the class described comprising a pair of grippers forautomatically withdrawing successively the lowermost bag from a bagstack, a pivot for the jaws of said grippers, a cam for pivoting eachgripper jaw, a pivoted carrying said grippers, and a cam for bodilypivoting the grippers, whereby the grippers are caused to move into andout of operative position with respect to the bag stack.

4. A machine of the class described comprising in combination, a bagmagazine, means for'successively withdrawing bags from the bottom of themagazine, a receiving table or bed, forwarding rollers for receiving thewithdrawn bags and charge end of the machine.

' A machine of the class described comprising continue the lateralmovement of the bags toward the discharge end of the machine.

A machine of the 10: A machine of the class described comprising a pairof grippers for automatically withdrawing successively and lengthwisethe lowermost bag from a bag stack, a pivot for the jaws of saidgrippers, a cam for pivoting each gripper jaw, a pivoted arm carryingsaid grippers, and a cam for bodily pivoting the grippers, whereby thegrippers are caused to move into and out of operative position withrespect to the bag stack.

11. A machine of the class described comprising in combination a bagmagazine, means for successively withdrawing bags lengthwise from thebottom of the magazine, a receiving table or bed, forwarding rollers forreceiving the withdrawn bags and depositing them upon said table or bed,a pusher for pushing the bags laterally from said table, camscontrolling said grippers, driving mechanism for said cams, rollers andpusher, and means for adjusting said grippers, rollers, cams and drivingmechanism relatively to the bag magazine to accommodate the machine todifferent length bags.

ADOLPH POTDEVIN

